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Fig. 3. Following TM administration at E8.5, the limbs of
Prx1CreERT2;Tbx5lox/lox embryos are normally patterned at
E10.5. Tbx5 heterozygous (control) (A,C,E,G,I,K,M,O) and mutant
(B,D,F,H,J,L,N,P) embryos from pregnant females gavaged with TM at E8.5, were
harvested at E10.5 and analysed by in situ hybridisation for: Tbx5
ex3 (A,B); Fgf10 (C,D);
Fgf8 (E,F); Sall4 (G,H);
Tbx3 (I,J); Shh (K,L);
Tbx15 (M,N); Fgf8 and Myod
(O,P). (B,H) Arrows indicate the heart and the anterior domain
of the limb, respectively. (O, P) Somites are identified based on
Myod expression and are numbered in a rostral to caudal
direction.